CN114143925A - Multi-path intelligent control induction heating device and method - Google Patents
Multi-path intelligent control induction heating device and method Download PDFInfo
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- CN114143925A CN114143925A CN202111459536.6A CN202111459536A CN114143925A CN 114143925 A CN114143925 A CN 114143925A CN 202111459536 A CN202111459536 A CN 202111459536A CN 114143925 A CN114143925 A CN 114143925A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/04—Sources of current
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention provides a multipath intelligent control induction heating device and method. The device solves the technical problem of multi-path welding seam cooperative heating through the arrangement of the electromagnetic induction heating power supply unit and the heating module. The invention can carry out independent or cooperative heating and temperature control of pre-welding preheating, inter-channel temperature maintaining and post-heat insulation treatment on the welding line, records a heating curve, and utilizes a multi-channel intelligent control induction device to start preheating before welding of the long welding line of the high-strength steel, thereby ensuring that the same welding line starts to be welded at the same time, realizing independent control of inter-channel temperature of each station and cooperative and synchronous heating and heat insulation after welding, meeting the welding process requirement of the high-strength steel, obtaining high-quality welding line, avoiding cold cracks generated by the welding line and improving the safety of products. In addition, compared with far infrared heating, the electromagnetic induction heating can save electric energy by more than 30%, the surface temperature of the heating module is lower than 100 ℃, the construction environment is improved, and the risk of high-temperature scalding of constructors is reduced. The device and the method are suitable for being used as a multi-path intelligent control induction heating device and method.
Description
Technical Field
The invention relates to the field of welding of pressure vessels, in particular to a multi-path heating device and a multi-path heating method for pre-heating and post-heating of high-strength steel welding, and specifically relates to a multi-path intelligent control induction heating device and a multi-path intelligent control induction heating method.
Background
The pressure vessel structure is made of low-alloy high-strength steel commonly used, and the steel solves the problem of delayed cracks generated in a welding joint through preheating before welding, maintaining the temperature between channels in the welding process and performing heat treatment after welding, thereby ensuring the quality of a welding seam and the safety of the structure.
The existing heating equipment can control a plurality of heating sheets to heat simultaneously, measure the temperature at different positions at multiple points, but can only control the heating and the heat preservation according to the temperature fed back by a temperature thermocouple, and record the temperature control curve of the path by paper.
The equipment can meet the heating requirement of high-strength steel welding, but along with the increase of the length of a welding seam and the thickening of the thickness of a steel plate, the single-path heating rate independent control of each station is difficult to meet, the welding process requirements of multi-path intelligent coordination control and preheating of each station position, path temperature keeping and post-heating whole-process temperature control recording are difficult to meet, when the multi-station welding of the welding seam with longer length is caused, each equipment heats a plurality of stations, the temperature difference between each path is large, the temperature of each station cannot be independently controlled, the heating temperature of each station cannot be coordinately controlled, the simultaneous welding of one welding seam can not be ensured, the process conditions of independent control of the temperature between the paths and synchronous immediate post-heating can not be ensured, the cold crack risk generated by the high-strength steel welding seam is increased, the structural deformation and the difficulty of the control of the welding quality is increased, if the situation of untimely post-heating can not occur, and the quality and the structural safety of the welding seam are influenced.
Disclosure of Invention
The invention provides a multi-path intelligent control induction heating device and a multi-path intelligent control induction heating method, which aim to solve the technical problems that each station of a high-strength steel long weld joint welding preheating, inter-channel temperature maintaining and immediate post-heating process cannot be independently controlled in temperature, heat preservation and cooperative heating of each station, and each path cannot record a control process curve and other high-strength steel welding heating records. The device solves the technical problem of multi-path welding seam cooperative heating through the arrangement of the electromagnetic induction heating power supply unit and the heating module.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a multi-channel intelligent control induction heating device comprises a cabinet type intelligent control induction heating power supply cabinet body and a temperature control loop,
the cabinet body mainly comprises a display, a recorder, a heating power supply unit and a buzzer,
the cabinet comprises a cabinet body, a display, recorder circuits, a plurality of heating power supply units, a plurality of temperature sensors and a plurality of temperature sensors, wherein the plurality of heating power supply units are arranged in parallel on the lower part of the cabinet body; the display is also provided with a power switch for turning on and off the power supply of the power supply heating module;
the electric heating power supply units are two, four, six or eight electromagnetic induction heating power supplies, and each power is less than or equal to 30 KW;
each heating power supply unit is provided with three sockets, two sockets are connected with the heating module through a plug cable and a quick connector, the heating module is fixed on a welding seam to be heated by using a fixed pressing horse, the other socket is plugged with a thermocouple with a feeder line, the thermocouple is fixed on a temperature measuring point on the reverse side of the heating position of the heating module of the same group of heating power supply units to form a temperature control loop,
the temperature control loops with corresponding number are arranged according to the length of a weld joint to be welded, and form a complete set of multi-path intelligent control induction heating device together with the cabinet body, wherein the number of the temperature control loops is one half of the length of the weld joint, and the temperature control loops are arranged at intervals and are adjacent to each other.
A method for intelligently controlling an induction heating device by using multiple paths comprises the following steps:
the first step is as follows: before welding, setting the number of temperature control loops according to the length of a weld joint to be welded, setting the length of the weld joint corresponding to each temperature control loop as a welding station, righting a plurality of heating modules to ensure that the weld joint to be heated is positioned at the center of the width of each heating module, adjusting the distance between the heating modules and the adjacent heating modules to be less than or equal to 0.05m, and fixing the heating position of a welding surface behind the weld joint to be heated by using a fixed pressing horse;
the second step is that: connecting each heating power supply unit with the corresponding heating module by using a cable in sequence, and confirming that the connection is firm and reliable;
the third step: fixing the thermocouple with the feeder line led out from each heating power supply unit at a position which is about 0.05m away from the back surface of the heating surface of the corresponding heating module and one side of the welding groove respectively by using a fixing press;
the fourth step: opening the cabinet body to start the cabinet body and perform self-checking on the equipment, checking the storage amount of recording paper in a recorder after the self-checking state of the equipment is normal and detecting whether the feedback temperature of the thermocouple with the feeder line of each temperature control loop is normal or not;
the fifth step: after setting technological parameters such as heating temperature, heating rate, heat preservation temperature, heat preservation time and the like required by the process, operating a power switch to simultaneously start preheating and heating before welding for the multiple heating modules and synchronously start recording;
and a sixth step: the heating module automatically enters a constant temperature heat preservation state when reaching a temperature heating position and continuously heats the part which does not reach the set temperature because the thickness of the heating plate or the heat dissipation condition are different;
the seventh step: when all the temperature control loops of each path reach the set temperature, the device buzzes for prompting, and multiple welding stations can start welding at the same time, so that each path of the invention enters an independent inter-path temperature keeping state;
eighth step: the temperature of each temperature control loop changes along with the welding temperature, the temperature of each heating position of each path is automatically controlled to be kept above the lower limit of the inter-path temperature, the heating is automatically stopped when the temperature is higher than the upper limit of the inter-path temperature, the heating is automatically kept when the temperature approaches the lower limit temperature, and each path is independently controlled and independently recorded;
the ninth step: the welding station which is welded firstly enters the inter-channel temperature constant temperature keeping mode corresponding to the heating module, and after all the rest welding stations are welded, the post-heating temperature rise is started synchronously;
the tenth step: the heating module enters a constant temperature heat preservation state when the position reaches the post-heating temperature, the multi-path temperature control loops simultaneously enter a heat preservation state after the rest positions all reach the post-heating temperature, the heating operation is finished after the heat preservation timing is started to reach the specified time length, all paths of records are synchronously stopped, and a record curve is printed; namely, the whole process of preheating a welding seam, maintaining the temperature between the welding seams and post-heating and heat-preserving is controlled and recorded.
The invention has the advantages that the welding seam can be subjected to independent or cooperative heating and temperature control of pre-welding preheating, inter-channel temperature maintaining and post-heating heat preservation treatment through the multi-channel intelligent control induction device, a heating curve is recorded, preheating can be started before welding of the long welding seam of the high-strength steel by utilizing the multi-channel intelligent control induction device, the same welding seam is ensured to be simultaneously welded, independent control of inter-channel temperature of each station and cooperative and synchronous heating and heat preservation after welding are realized, the welding process requirement of the high-strength steel is met, the high-quality welding seam is obtained, cold cracks of the welding seam are avoided, and the product safety is improved. In addition, compared with far infrared heating, the electromagnetic induction heating can save electric energy by more than 30%, the surface temperature of the heating module is lower than 100 ℃, the construction environment is improved, and the risk of high-temperature scalding of constructors is reduced. The device and the method are suitable for being used as a multi-path intelligent control induction heating device and method.
Drawings
FIG. 1 is a schematic diagram of a single set of temperature control circuits according to the present invention.
In the figure, 1, a cabinet body, 2, a heating power supply unit, 3, a heating module, 4, a cable, 5, a quick connector, 6, a thermocouple with a feeder line, 7, a fixed pressing horse, 8, a recorder, 9, a display, 10, a welding station, 11, a welding seam to be heated, and 12, a buzzer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
All embodiments, implementations and features of the invention can be combined with each other in the invention without contradiction or conflict. In the present invention, conventional devices, apparatuses, components, etc. are either commercially available or self-made according to the present disclosure. In the present invention, some conventional operations and apparatuses, devices, components are omitted or only briefly described in order to highlight the importance of the present invention.
Referring to the attached drawings of the specification, the multipath intelligent control induction heating device comprises a cabinet type intelligent control induction heating power supply cabinet body 1 and a temperature control loop, wherein the cabinet body 1 mainly comprises a display 9, a recorder 8, a heating power supply unit 2 and a buzzer 12,
the heating cabinet comprises a cabinet body 1, a plurality of heating power supply units 2, a display 9, recorders 8, a circuit signal connection device and a control device, wherein the heating power supply units 2 are arranged on the lower portion of the cabinet body 1 in parallel, the monitors 9 are embedded above the heating units 3, the recorders 8 are arranged on one sides of the monitors 9 in parallel, the number of the recorders corresponds to that of the heating power supply units 2, and the heating power supply units 2 are in circuit signal connection with the recorders 8 and are used for recording and displaying heating signals of the heating power supply units 2; the display 9 is also provided with a power switch for turning on and off the power supply of the heating power supply unit 2;
the electric heating power supply units 2 are two, four, six or eight electromagnetic induction heating power supplies, and each power is less than or equal to 30 KW;
each heating power supply unit 2 is provided with three sockets, two sockets are connected with a heating module 3 through a plug cable 4 and a quick connector 5, the heating module 3 is fixed on a welding seam 11 to be heated by a fixed pressing horse 7, the other socket is plugged with a thermocouple 6 with a feeder line, the thermocouple is fixed on a temperature measuring point on the reverse side of the heating position of the heating module 3 of the same group of heating power supply units 2 to form a temperature control loop,
the thermocouple with the feeder 6 can feed back a temperature signal to the recorder 8;
the upper top of the cabinet body is also provided with a buzzer 12 for prompting the working state of the device, the buzzer is respectively in circuit connection with a self-protection circuit and a temperature control loop in the cabinet body 1, when abnormal conditions such as short circuit and the like occur in the cabinet body 1, the self-protection circuit automatically cuts off the power when working, and simultaneously the buzzer 12 is driven to work to perform buzzing prompt; or when the temperature control loop reaches the set temperature, the buzzer 12 buzzes for prompting.
The temperature control loops corresponding to the number of the paths are arranged according to the length of the welding line 11 to be heated, and form a set of multi-path intelligent control induction heating device together with the cabinet body 1, wherein the number of the paths of the temperature control loops is one half of the length of the welding line, and the temperature control loops are arranged at intervals and are adjacent to each other.
The recording paper is arranged in the recorder 8, so that the recorded data can be printed and output conveniently.
A method for intelligently controlling an induction heating device by using multiple paths comprises the following steps:
the first step is as follows: before welding, setting the number of temperature control loops according to the length of a weld joint 11 to be heated, setting the length of the weld joint corresponding to each temperature control loop as a welding station 10, righting a plurality of heating modules 3 to ensure that the weld joint 11 to be heated is positioned at the center of the width of each heating module 3, adjusting the distance between the heating modules 3 and the adjacent heating modules to be less than or equal to 0.05m, and fixing the heating position of a welding surface behind the weld joint 11 to be heated by using a fixed pressing horse 7;
the second step is that: connecting each heating power supply unit 2 and the corresponding heating module 3 by a cable 4 in sequence to confirm that the connection is firm and reliable;
the third step: fixing the thermocouple 6 with the feeder line led out from each heating power supply unit 2 at a position which is about 0.05m away from the back surface of the heating surface of the corresponding heating module 3 and one side of the welding groove by using a fixed pressing horse 7;
the fourth step: opening the cabinet body to start the cabinet body and perform self-checking on the equipment, after the self-checking state of the equipment is normal, the buzzer 12 does not give an alarm, checking the storage amount of recording paper in the recorder 8, and simultaneously detecting whether the feedback temperature of the thermocouple 6 with the feeder line of each temperature control loop is normal;
the fifth step: after setting technological parameters such as heating temperature, heating rate, heat preservation temperature, heat preservation time and the like required by the process, operating a power switch to simultaneously start preheating and heating before welding of the multiple heating modules 3 and synchronously start recording;
and a sixth step: because the heating plate thickness or the heat dissipation condition is different, the heating module 3 automatically enters a constant temperature heat preservation state when arriving at the temperature heating position, and the heating module 3 continues to heat when the temperature does not reach the set temperature;
the seventh step: when all the heating control loops of each path reach the set temperature, the device buzzes to prompt, the multiple welding stations 10 can start welding at the same time, and each path of the invention enters an independent inter-path temperature keeping state;
eighth step: the temperature of each temperature control loop changes along with the welding temperature, the temperature of each heating position of each path is automatically controlled to be kept above the lower limit of the inter-path temperature, the heating is automatically stopped when the temperature is higher than the upper limit of the inter-path temperature, the heating is automatically kept when the temperature approaches the lower limit temperature, and each path is independently controlled and independently recorded;
the ninth step: the welding station 10 which is welded firstly enters the inter-channel temperature constant maintenance corresponding to the heating module 3, and after all the rest welding stations 10 are welded, the post-heating temperature rise is synchronously started;
the tenth step: the heating module 3 enters a constant temperature heat preservation state when the post-heat temperature position is reached, and after the rest positions all reach the post-heat temperature, the multi-path temperature control loop simultaneously enters the heat preservation state, starts heat preservation timing to a specified time, ends heating work, synchronously stops all paths of records, and prints a record curve; namely, the whole process of preheating a welding seam, maintaining the temperature between the welding seams and post-heating and heat-preserving is controlled and recorded.
The invention is further illustrated by the following example of welding a pressure vessel segment transverse welding circumferential seam length 32M:
use 2M as the division, will wait to heat welding seam 11 and divide into 16 welding station 10, lay a heating module 3 per welding station 10, make waiting to heat welding seam 11 and be located 3 width central points of every heating module and put, the adjustment is less than or equal to 0.05M with the interval between adjacent heating module 3, gets two control induction heating device simultaneous workings that constitute by eight electric heat power supply unit 2:
the first step is as follows: before welding, laying ten heating modules 3 of which the lengths are 2M and the widths are multiplied by 0.3M of two control induction heating devices at the positions of sixteen divided welding stations 10 on a to-be-heated pressure-resistant segmented circumferential weld, enabling a to-be-heated weld 11 to be located at the center of the width of each heating module 3, adjusting the distance between each heating module 3 and the adjacent heating module 3 to be less than or equal to 0.05M, and fixing the heating modules 3 by using a fixed pressing horse 7;
the second step is that: respectively connecting sixteen heating power supply units 2 of the two sets of devices with corresponding sixteen heating modules 3 in sequence through quick connectors 5 at two ends of a cable 4, confirming that the connection is correct, and enabling the quick connectors 5 to be connected firmly and reliably;
the third step: fixing thermocouples 6 with feeder lines, led out from the sixteen heating power supply units 2, at temperature measuring points which are about 0.05m away from one side of a welding groove on the reverse side of the heating surface of the corresponding heating module 3 by using fixed pressing horses 7 respectively;
the fourth step: starting the cabinet body 1 of the heating device, checking whether the recording paper amount of the recorder 8 is sufficient or not after the self-checking state of the device is normal, and detecting whether the feedback temperature of each path of thermocouple 6 with the feeder line is normal or not;
the fifth step: according to the process requirements, after setting process parameters such as heating temperature, heating rate, heat preservation temperature, heat preservation time and the like, touching and pressing a start key on a power supply display 9, simultaneously starting preheating and heating before welding for each path of heating module 3, and synchronously starting recording;
and a sixth step: because the heating plates are different in thickness or different in heat dissipation conditions, the heating part with the heating temperature is heated firstly, and automatically enters a constant-temperature heat preservation state, and the heating module 3 is used for continuously heating the part which does not reach the set temperature;
the seventh step: when all the roads reach the set temperature, the buzzer 12 on the cabinet body 1 gives a buzzing prompt and can start welding at the same time, and the invention enters an inter-road temperature keeping state;
eighth step: the heating module 3 automatically controls the temperature of each heating position to be kept above the lower limit of the inter-lane temperature according to the temperature state of each welding station 10, the heating is automatically stopped when the temperature is higher than the upper limit of the inter-lane temperature, the heating is automatically kept when the temperature is close to the lower limit temperature, each path is automatically and independently controlled, and the recorder 8 independently records the temperature;
the ninth step: firstly, the welding station 10 is welded and enters the inter-channel temperature constant-temperature maintenance corresponding to the heating module 3, and after all the welding of the rest welding stations 10 is finished, the post-heating temperature rise is synchronously started;
the tenth step: the heating module 3 enters a constant temperature heat preservation state when the post-heat temperature position is reached, sixteen temperature control loops simultaneously enter a heat preservation state after all other positions reach the post-heat temperature, heat preservation timing is started, heating operation is automatically finished after a specified heat preservation time length is reached, all records are synchronously stopped, a recording curve is printed, and a shutdown key on an equipment display 9 is touched and pressed, so that the heating, control and recording of the whole process of pressure-resistant segmented circumferential weld preheating, inter-lane temperature keeping and post-heat preservation are completed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a multichannel intelligent control induction heating device which characterized in that: comprises a cabinet type intelligent control induction heating power supply cabinet body (1) and a temperature control loop, wherein the cabinet body (1) mainly comprises a display (9), a recorder (8), a heating power supply unit (2) and a buzzer (12),
the heating cabinet comprises a cabinet body (1), a plurality of heating power supply units (2) and a display (9), wherein the heating power supply units (2) are arranged on the lower portion of the cabinet body (1) in parallel, the display (9) is embedded above the heating units (3), the recorders (8) corresponding to the heating power supply units (2) in number are arranged on one side of the display (9) in parallel, and the heating power supply units (2) are in circuit signal connection with the recorders (8) and used for recording and displaying heating signals of the heating power supply units (2);
every heating power supply unit (2) is provided with three sockets, wherein two sockets are connected with the heating module (3) through a plug cable (4) and a quick connector (5), the heating module (3) is fixed on a welding seam (11) to be heated by utilizing a fixed pressing horse (7), the other socket is plugged with a thermocouple (6) with a feeder line, and the thermocouple is fixed on a temperature measuring point on the reverse side of the heating position of the heating module (3) of the same group of heating power supply units (2) to form a temperature control loop.
2. The multi-channel intelligent control induction heating device of claim 1, characterized in that:
the top still is equipped with bee calling organ (12) on the cabinet body for suggestion device operating condition.
3. The multi-channel intelligent control induction heating device of claim 2, characterized in that:
the buzzer (12) is connected with a self-protection circuit in the cabinet body (1), and when the cabinet body (1) is in abnormal conditions such as short circuit, the self-protection circuit automatically cuts off power when working, and simultaneously drives the buzzer (12) to work to give a buzzing prompt.
4. The multi-channel intelligent control induction heating device of claim 2, characterized in that:
the buzzer (12) is connected with the temperature control loop circuit, and when the temperature control loop reaches a set temperature, the buzzer (12) gives a buzzing prompt.
5. The multi-channel intelligent control induction heating device of claim 1, characterized in that:
and the display (9) is also provided with a power switch for turning on and off the power supply of the heating power supply unit (2).
6. The multi-channel intelligent control induction heating device of claim 1, characterized in that:
the heating power supply units (2) are electromagnetic induction heating power supplies, the number of the heating power supply units is two, four, six or eight, and each power is less than or equal to 30 KW.
7. The multi-channel intelligent control induction heating device of claim 1, characterized in that:
the number of the temperature control loops is set according to the length of a welding seam (11) to be heated, the number of the temperature control loops is one half of the length of the welding seam, and the temperature control loops are arranged at intervals.
8. The multi-channel intelligent control induction heating device of claim 1, characterized in that:
the thermocouple with feeder (6) can feed back the temperature signal to the recorder (8).
9. The multi-channel intelligent control induction heating device of claim 8, characterized in that:
the recorder (8) is internally provided with recording paper and is used for printing and outputting recorded data.
10. A method of using a multi-channel intelligent control induction heating apparatus as claimed in any one of claims 1 to 9, characterized by:
the method comprises the following steps:
the first step is as follows: before welding, setting the number of temperature control loops according to the length of a welding seam (11) to be heated, setting the length of the welding seam corresponding to each temperature control loop as a welding station (10), righting a plurality of heating modules (3) to enable the welding seam (11) to be heated to be positioned at the center of the width of each heating module (3), adjusting the distance between each heating module and the adjacent heating module (3) to be less than or equal to 0.05m, and fixing the welding seam at the heating position of the rear welding surface of the welding seam (11) to be heated by using a fixed pressing horse (7);
the second step is that: connecting each heating power supply unit (2) with the corresponding heating module (3) by a cable (4) in sequence, and confirming that the connection is firm and reliable;
the third step: fixing the thermocouple (6) with the feeder line led out from each heating power supply unit (2) at a position which is about 0.05m away from the reverse side of the heating surface of the corresponding heating module (3) and one side of the welding groove by using a fixed pressing horse (7);
the fourth step: opening the cabinet body to start the cabinet body and perform equipment self-checking, after the equipment self-checking state is normal, the buzzer (12) does not give an alarm, checking the storage amount of recording paper in the recorder (8), and simultaneously detecting whether the feedback temperature of the thermocouple (6) with the feeder line of each temperature control loop is normal;
the fifth step: after setting technological parameters such as heating temperature, heating rate, heat preservation temperature, heat preservation time and the like required by the process, operating a power switch to simultaneously start preheating and heating before welding of the multiple heating modules (3) and synchronously start recording;
and a sixth step: because the thickness of the heating plate or the heat dissipation condition is different, the heating module (3) automatically enters a constant temperature heat preservation state when arriving at the temperature heating position, and the heating module (3) continues to heat when the part does not reach the set temperature;
the seventh step: when all the heating control loops of each path reach the set temperature, the device buzzes to prompt, the multiple welding stations (10) can start welding at the same time, and each path enters an independent inter-path temperature keeping state;
eighth step: the temperature of each temperature control loop changes along with the welding temperature, the temperature of each heating position of each path is automatically controlled to be kept above the lower limit of the inter-path temperature, the heating is automatically stopped when the temperature is higher than the upper limit of the inter-path temperature, the heating is automatically kept when the temperature approaches the lower limit temperature, and each path is independently controlled and independently recorded;
the ninth step: the welding station (10) which is welded firstly enters the inter-channel temperature constant-temperature maintenance corresponding to the heating module (3), and after all the rest welding stations (10) are welded, the post-heating temperature rise is started synchronously;
the tenth step: the heating module (3) at the position where the post-heating temperature is reached firstly enters a constant-temperature heat preservation state, after the rest positions all reach the post-heating temperature, the multi-path temperature control loops simultaneously enter the heat preservation state, heat preservation timing is started to reach a specified time length, heating work is finished, all paths of records are synchronously stopped, and a record curve is printed; namely, the whole process of preheating a welding seam, maintaining the temperature between the welding seams and post-heating and heat-preserving is controlled and recorded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111459536.6A CN114143925B (en) | 2021-12-02 | 2021-12-02 | Multipath intelligent control induction heating device and method |
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| CN202111459536.6A CN114143925B (en) | 2021-12-02 | 2021-12-02 | Multipath intelligent control induction heating device and method |
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| CN114143925A true CN114143925A (en) | 2022-03-04 |
| CN114143925B CN114143925B (en) | 2023-08-11 |
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| CN202111459536.6A Active CN114143925B (en) | 2021-12-02 | 2021-12-02 | Multipath intelligent control induction heating device and method |
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